Adobe Reader XI version 11.0.01 was a maintenance update released by Adobe Systems in January 2013
Adobe Acrobat and Reader have historically been the de facto standards for Portable Document Format (PDF) interaction. However, prior to version XI, the software was plagued by a reputation for severe security vulnerabilities, often serving as a primary vector for malware delivery via malicious PDF files. adobe reader xi 11001
Exploits exist for Reader XI. Do not use it to open untrusted PDFs from the internet. Adobe Reader XI version 11